is this refill with carbs thing necessary if i'm just doing light bodyweight exercises or could I just stay on this diet every day?

If I use coconut oil, will the insulin spike it causes impact negatively on my fatloss goal

thanks

hey mate, great to see your log.

If you check the sticky in the keto section under "A Guide to Ketosis, you can see that is your main goal is fat loss, then there is no need for a carb refeed.
If your looking to maintain body comp, then refeed is optional.